There are two kinds of error blind credulity and piecemeal criticism. Never believe a word without putting its truth to the test discernment does not grow in laziness and this faculty of discernment is indispensable to the Seeker. Sound skepticism is the necessary condition for good discernment but piecemeal criticism is an error.
The world always makes the assumption that the exposure of an error is identical with the discovery of the truth that error and truth are simply opposite. They are nothing of the sort. What the world turns to, when it has been cured of one error, is usually simply another error, and maybe one worse than the first.